Re: Non-linearity of the human ear
I've recently been prescribed an NHS hearing aid, the fitting of which is quite complex now. A microphone is inserted alongside and gives a real-time graph of your ear's frequency response. The aid is tuned to restore it to normal, just like aligning an IF. I assume the deficiency must therefore be in the eardrum, not the brain.
It will naturally affect some more than others, and at different ages and rates, but I suspect that none of us will escape indefinitely.
In my case, music sounded OK, I had got used to the gradual change and didn't notice it, but it was speech. Everyone mumbled!
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